Amazon SEO: Listing Optimisation That Ranks Inside Amazon

Half the listing gets you found. The other half gets you bought — and quietly decides how often you are shown.

A seller's first instinct is to add more keywords. It rarely works. Text gets you into the result set; sales performance decides your position in it. Stuff a title with every phrase you can think of and you will still sit on page four, beside a listing with half your keywords and four times your reviews.

This page covers the organic side only. Sponsored campaigns and the channel decision sit in our guide to Amazon marketing in India, the ad formats in our Amazon ads breakdown, and ranking a D2C store in Google is a different exercise, covered in the ecommerce SEO guide.

One hypothetical brand runs through the page: Kaya Naturals, a Pune D2C label selling cold-pressed onion hair oil on Amazon.in. Invented, not a client.

How Amazon decides what ranks (and why nobody at Amazon says "A9")

Amazon describes ranking in terms of factors, not a named algorithm. Amazon's SEO guide for sellers (3 September 2025) breaks search into five parts, one being sales rank, which reflects "popularity based on real-time sales". On inputs it says listing quality and account health "can contribute to search rankings", alongside keyword placement in titles, descriptions and backend fields, plus images and competitive pricing.

"A9" appears nowhere in it. The term is industry shorthand from Amazon's old search subsidiary, and it has quietly mutated into "A10" on consultant blogs without Amazon confirming either name. Do not build a strategy on ranking weights nobody outside Amazon has seen. What Amazon does publish is enough to work with, in two buckets:

• Relevance. Whether you are indexed for the query at all. A yes/no gate, controlled by text: title, Item Highlights, bullets, description, backend search terms, structured attributes.
• Performance. Where you sit among the listings that passed the gate. Controlled by behaviour: clicks, conversion, sales velocity, price, reviews, and whether you are in stock. You cannot keyword your way out of a performance problem, and no conversion rate will rank you for a phrase you are not indexed for.

What each listing field does for ranking vs conversion

Ranking and conversion are separate jobs, and several fields only do one of them.

Verified against Amazon-owned pages on 23 September 2026. Limits vary by category and Amazon changes them with little notice, so treat this as a dated snapshot, not a permanent spec.

Titles: the 75-character rule that landed in July 2026

This is the biggest change to Amazon listing optimisation in years, and plenty of Indian sellers have not touched their titles since. Amazon's Seller Central announcement, "Updates to improve your product titles begin on July 27", sets titles at 75 characters or fewer including spaces, across all categories except media, so they render properly on phones.

• Item Highlights takes the overflow. Amazon's follow-up Q&A thread describes it as 125 extra characters for materials and use cases, and says that content is "searchable and visible with titles in search results and on product detail pages". The keywords you cut are not necessarily lost.
• Amazon rewrites it if you do nothing. Over-long titles get updated to an AI recommendation gradually, listings stay active through it, and brand owners get 14 days to review before it applies.

For Kaya Naturals: "Kaya Naturals Cold-Pressed Onion Hair Oil for Hair Fall, 200ml" is the title. "With red onion seed oil and bhringraj, no mineral oil, for dry frizzy hair" is the Item Highlights job. Brand, product type, the qualifier people search with, size. Nothing else fits.

One thing we could not verify: neither Amazon post names which marketplaces are in scope, so we will not tell you Amazon.in is definitely included on the same date. Check the title field in your own Seller Central account before rewriting a catalogue.

Bullets, description and backend search terms: what goes where

Highest-volume phrase in the title, qualifiers and use cases in bullets, and anything that would look ugly in public in backend search terms, which Amazon says should be lowercase, space-separated, with articles and prepositions skipped.

Repetition is where sellers lose. Amazon's guidance says if you use a key phrase once you probably do not need it again, and that stuffing "can create a poor customer experience and hurt your rankings". Backend terms are not a second title. They are for words you would never print on a listing: misspellings, the Hindi or Marathi product word a shopper types in Roman script, the category term you do not want on your own page.

Bullets do a different job. Amazon suggests a one- or two-word label plus an explanation of 100 characters or fewer, written as fragments. On a phone the first two bullets are often all anyone reads before the fold, so handle your worst objection in bullet one.

Images and video: the specs Amazon publishes

Images do not get you indexed. They decide whether an impression becomes a click, and clicks feed everything downstream. Amazon's Seller Central photography standards put the main image on pure white (RGB 255, 255, 255), product filling 85–100% of the frame, minimum 1,000 pixels on the longest side to enable zoom and 1,600 pixels or more as the optimum. No text, graphics, logos or watermarks.

Check the 1,000-pixel threshold first: below it you lose zoom, and a shopper who cannot read the label on a ₹499 hair oil scrolls on. Alt-text is the one image field that straddles both jobs. In a Seller Central thread on A+ content and SEO, an Amazon community manager says alt-text does not display on the detail page but "helps your products in search results". That is a staff forum reply, not help-page policy, so weight it accordingly.

Does A+ content help you rank? Our honest read

No, as far as Amazon will say. Its A+ content page claims Basic A+ "can increase sales by up to 8%" and well-implemented Premium A+ "up to 20%", and requires a Professional account plus Brand Registry. It makes no search-ranking claim anywhere.

Our view, labelled as opinion: A+ is a conversion asset that becomes a ranking asset second-hand. It lifts conversion, conversion feeds sales velocity, and velocity is what Amazon says sales rank reflects. Using A+ to hide keywords misreads what it is for. Expecting it to fix a listing nobody clicks on is worse.

Conversion rate vs more clicks: a worked hypothetical

Clearly labelled a hypothetical. Invented numbers, shown to make the arithmetic visible. Not benchmarks, not anyone's account data.

Kaya Naturals gets 1,000 impressions in a week for "onion hair oil for hair fall", at 4% click-through and 8% conversion. That is 40 clicks and 3.2 orders.

• Path A, chase clicks. A better main image and a tighter title take CTR from 4% to 6%. Now 60 clicks at 8% conversion: 4.8 orders.
• Path B, chase conversion. CTR stays at 4%, but better bullets, a zoomable image set and a sharper price take conversion from 8% to 12%. Still 40 clicks: 4.8 orders.

Identical units, unequal value. Path A is capped by an impression pool you do not control. Path B makes every click worth more, which shows up straight away in Sponsored Products ACoS, so the same budget buys more paid impressions that feed back into the organic signal. Run both, but if you can only fix one thing this month, fix the one that compounds. When we scope ecommerce SEO work for a marketplace brand, conversion elements are almost always the first pass.

Price, the Featured Offer and the stockout tax

Running out of stock is the most expensive listing mistake on Amazon, and it is barely a search mistake. Amazon's Featured Offer guide (10 April 2026) is blunt: "Your offer can't become featured if your item is out of stock."

The same page names four factors behind Featured Offer selection: competitive pricing, with featured prices "commonly at or below the lowest priced alternatives"; fast, free shipping and delivery dates with higher certainty; a consistent order experience tracked through Account Health; and inventory. Both FBA and merchant-fulfilled offers can win it.

So a stockout does not pause sales, it removes the add-to-cart button your performance signal is built on, and you rebuild velocity from a lower base. Plan inventory as an SEO decision, because on Amazon it is one.

Variations and what Brand Registry unlocks

Variations are a discovery decision. One parent with child ASINs for 100ml, 200ml and a two-pack puts a single strong page in the grid and moves the size choice to the detail page. Three standalone listings split the sales signal three ways. They must be genuine variations: bolting an unrelated item onto a well-reviewed parent is a policy violation, not a tactic.

Brand Registry is the real gate. Amazon's Brand Analytics page requires a Professional selling account and Brand Representative status for an enrolled brand before you see the Search Analytics dashboards: Search Query Performance, Search Catalog Performance and Top Search Terms. Those show the queries your ASINs actually got impressions for, the closest thing Amazon gives you to Search Console. A+ sits behind the same gate.

Unregistered on Amazon.in means researching keywords blind. Registering a trademark is slow and still the highest-return item on this page, because everything after it becomes measurable. The research method transfers from our D2C SEO guide.

The Amazon.in layer: eight languages and the 8 October window

Language. Amazon India's press release of 20 September 2021 took Amazon.in to eight languages: Hindi, English, Kannada, Malayalam, Tamil, Telugu, Marathi and Bengali. Kishore Thota, then Director of Customer Experience and Marketing at Amazon India, said "every month, tens of millions of customers visit Amazon.in in regional languages and 90% of the customers are from tier 2 and below cities." Those figures are five years old, so treat them as historic. The behaviour has not reversed: many buyers type Hindi or Marathi product words in Roman script, and backend search terms are where those transliterations belong.

Timing. Amazon India confirmed on 18 September 2026 that Great Indian Festival 2026 starts 8 October, alongside 20 new fulfilment centres, six sort centres and 150 last-mile delivery stations, with its seller base past 20 lakh. A stockout in that window costs more than the lost orders, because you lose Featured Offer eligibility exactly when demand and competitor velocity peak. Get listing fixes live and indexed before the sale opens. The cross-channel festive plan is in our festive ecommerce marketing guide.

A seven-step listing audit you can run this week

1. Check title length first. Anything over 75 characters is in scope for Amazon's rewrite. Move the overflow into Item Highlights yourself rather than letting the AI recommendation choose.
2. Search your own top query on mobile. Look at your main image beside the five listings around it. If yours is the one you would skip, that is a click problem.
3. Verify indexing, do not assume it. Search your exact target phrase plus your brand name. No ASIN in the results means you are not indexed for it, and bidding will not fix that.
4. Rebuild backend search terms. Lowercase, space-separated, no commas, no title words repeated, synonyms and transliterations in.
5. Fix images under 1,000 pixels. No zoom means a worse detail page, and this is the cheapest fix here.
6. Pull Search Query Performance if you have Brand Registry. Compare the queries you get impressions for against the ones you get purchases for. The gap is the real problem.
7. Set a stock floor before 8 October. Work backwards from restock lead time, not last month's run rate. The Featured Offer is what you are protecting.